Low Oil Pressure Indicator Circuit Troubleshooting - Short
Low Oil Pressure Indicator Circuit Troubleshooting - Short
1. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) Initial Inspection and Diagnostic Overview.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. Make sure the HDS communicates with the vehicle and the engine control module (ECM)/powertrain control module (PCM). If it does not communicate, troubleshoot the DLC circuit Testing and Inspection.
4. Check for DTCs Initial Inspection and Diagnostic Overview. If a DTC is present, diagnose, and repair the cause before continuing with this test.
5. Turn the ignition switch ON (II), or press the engine start/stop button to select the ON mode, and check the OIL PRESSURE SWITCH in the PGM-FI DATA LIST with the HDS.
Is OFF indicated?
YES -
Replace the gauge control module Service and Repair.�
NO -
Go to step 6.
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Check the oil pressure switch Testing and Inspection.
Is the oil pressure switch OK?
YES -
Go to step 8.
NO -
Replace the oil pressure switch Service and Repair.�
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and jump the SCS line with the HDS, then turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
NOTE: This step must be done to protect the ECM/PCM from damage.
9. Disconnect ECM/PCM connector C (49P).
10. Check for continuity between the oil pressure switch connector and body ground.
Is there continuity?
YES -
Repair short to ground in the wire between the oil pressure switch and ECM/PCM connector terminal C45.�
NO -
Update the ECM/PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good ECM/PCM Initial Inspection and Diagnostic Overview, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM Service and Repair.�